Updated bind and bind97 packages that fix one security issue are nowavailable for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the DomainName System (DNS) protocols. BIND includes a DNS server (named); a resolverlibrary (routines for applications to use when interfacing with DNS); andtools for verifying that the DNS server is operating correctly.

A flaw was discovered in the way BIND handled certain DNS requests. Aremote attacker could use this flaw to send a specially-crafted DNS requestpacket to BIND, causing it to exit unexpectedly due to a failed assertion.(CVE-2011-2464)

Users of bind97 on Red Hat Enterprise Linux 5, and bind on Red HatEnterprise Linux 6, are advised to upgrade to these updated packages, whichresolve this issue. After installing the update, the BIND daemon (named)will be restarted automatically.

4. Solution:

Before applying this update, make sure all previously-released erratarelevant to your system have been applied.